<html>
<head> <title> I'm studying Javascript and Jquery</title>
</head>
<body>
<p> First I want to review Javascript </p>
<p><h3> Next, I will study JQuery </h3></p>
<br/>
First Name : <input type="text" value="aaa" id="FirstName"/>
<br/>
Second Name <input type="text" value="bbb" id="SecondName" />
<br/>
<script type="text/javascript">
	function sayHello()
	{
		var first = document.getElementById("FirstName").attributes["value"].nodeValue;
		alert(first);
	}
</script>
<input type="button" value="Click Here" onclick="sayHello()"/>
</body>
</html>